The clinical effectiveness of implants placed immediately into fresh extraction sites of molar teeth
The clinical effectiveness of implants placed immediately into fresh extraction sites of molar teeth
复制标题
DOI：
10.1902/jop.2000.71.5.839
复制
发表时间：
2000-05-01
影响因子：
4.3
通讯作者：
Chaushu, G
中科院分区：
文献类型：
--
作者：
Schwartz-Arad, D;Grossman, Y;Chaushu, G
背景：关于即刻种植的研究描述了其在前磨牙和前磨牙区域的应用。然而，它在立即更换磨牙的临床有效性很少受到质疑。方法：1989 ~ 1996年，对43例拔除磨牙51颗，即刻植入种植体56颗，其中46颗拔除1颗，5颗拔除2颗。所有种植体均采用Feed修复体修复（4个单冠和52个夹板）。平均随访时间为15个月（范围：4至60个月）。以下参数对种植体失败的影响进行了评估：性别，足弓，吸烟，拔牙前垂直骨丢失，种植体长度，和严重程度之间的两个阶段的surgical.Results：5年累积生存率（5年CSR）为89%。男性的5年CSR为84%，女性为93.5%。上颌5年CSR为82%，下颌为92%。在非吸烟者（50个植入物）中，5年CSR为90%，而吸烟者（6个植入物）为83%。50个非失效种植体中有8个（6个轻微，2个严重）明显出现并发症，而6个失效种植体中有2个（轻微）出现并发症。在其他研究variables.Conclusions：立即种植在磨牙区是一种替代的，可预测的手术治疗。下颌后牙即刻种植的预后优于上颌后牙。
Background: Studies concerning immediate implantation describe its use in the anterior and premolar regions. However its clinical effectiveness in immediately replacing molar teeth has rarely been challenged. The purpose of this study was to evaluate the survival rate of implants placed immediately after extraction of molar teeth to support a fixed ceramo-metal prosthesis.Methods: From 1989 to 1996, 56 immediate implants were placed in 43 patients following extraction of 51 molars; 46 molars were replaced by 1 implant and 5 molars replaced by 2 implants. All implants were restored with Feed prostheses (4 single crowns and 52 splinted). Mean follow-up period was 15 months (range, 4 to 60 months). The influence of the following parameters on implant failure was evaluated: gender, arch, smoking, pre-extraction vertical bone loss, implant length, and severity of complications between the two stages of surgery.Results: The 5-year cumulative survival rate (5-year CSR) was 89%. The 5-year CSR among men was 84% compared to 93.5% among women. The maxillary 5-year CSR was 82% and the mandibular 92%. Among non-smokers (50 implants), the 5-year CSR was 90% compared to 83% among smokers (6 implants). Complications were evident in 8 (6 minor, 2 major) out of 50 non-failing implants compared to 2 (minor) of the 6 failing implants. No differences were evident in the other study variables.Conclusions: Immediate implantation in the molar region is an alternative, predictable surgical treatment. Immediate implantation in the posterior mandible has a better prognosis than in the posterior maxilla.